Reflection: Lesson Planning Area of Compound Shapes with Unknown Dimensions - Section 2: Intro to New Material


This year (14-15), when I taught this lesson, I decided to pare down the number of examples.  This is the third lesson in the compound figure series, and my students seemed ready to attack these problems with less support from me.  I recognized this about the group before prepping my materials for this lesson, so I was able to cut out the examples from the student packet.  I think it is important to adjust my materials to meet the current needs of my current students.  Sometimes, this means adding in extra support.  Sometimes it means pushing kids ahead with less from me.

  Adjusting Plans
  Lesson Planning: Adjusting Plans
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Area of Compound Shapes with Unknown Dimensions

Unit 10: Area of Two Dimensional Figures
Lesson 13 of 14

Objective: SWBAT find the area of a compound shape by determining unknown dimensions and decomposing the figure into rectangles.

Big Idea: When a compound shape is decomposed into non-overlapping figures, we can can find and combine the area of each individual shape in order to determine the total area.

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8 teachers like this lesson
Math, area (Measurement), Geometry, square units, dimension, compound figures
  65 minutes
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